Scituate-04

Scituate, Herring River

42.171536, -70.750239

Dimensions: 1ft diameter
Condition: Good
Comments: Debris grate observed on upstream end of culvert; was rusty but appeared to be in good condition. Erosion observed around downstream headwall. Resident indicated that berm periodically overtops during flood tide at low point near Cushing Road.

Legacy data from previous surveys and documentation

Invasive Species: Yes
Restoration Status: Not Applicable
Invasive Comments: Upstream impoundment was predominately comprised of phragmites. Appeared that there was little to no tidal influence.
Restoration Comments: Would potentially be a good restoration candidate - minimal low lying infrastructure was observed; however, upstream area is used by the town as a drinking water well field.

General Comments: The site is easily accessible by walking south along a grassed berm at the end of Cushing Road for approximately 500 feet.
Operation Plan: No
Gate Comments: Circular metal hinged flap gate was operable and appeared to be in good condition. Resident indicated that it was rebuilt shortly after the storm of 1991.

Elevation Comments: Extent of existing downstream tidal influence unable to be assessed; staining mark appeared to extend above top of headwall. Extent of existing upstream tidal influence unable to be assessed; hinged gate did not appear to allow any upstream tidal influence. The approximate invert elevation was assessed. The below lists measuredowns taken with a surveyors rod and corresponding top of headwall LiDAR elevations (NAVD88 datum). 1) TG Inv (D/S tide gate): Top of HW El (D/S) = 2.92’; Inv Measuredown = 3.00’; TG Inv = 3.00’ – 2.92 = -0.08’
Other Comments: Area on the upstream side is now part of the town’s drinking water wellfields